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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
source lib.sh
NSIM_SV_ID=$((256 + RANDOM % 256))
NSIM_SV_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_SV_ID
NSIM_CL_ID=$((512 + RANDOM % 256))
NSIM_CL_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_CL_ID
NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device
NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device
NSIM_DEV_SYS_LINK=/sys/bus/netdevsim/link_device
NSIM_DEV_SYS_UNLINK=/sys/bus/netdevsim/unlink_device
SERVER_IP=192.168.1.1
CLIENT_IP=192.168.1.2
SERVER_PORT=48675
setup_ns()
{
set -e
ip netns add nssv
ip netns add nscl
NSIM_SV_NAME=$(find $NSIM_SV_SYS/net -maxdepth 1 -type d ! \
-path $NSIM_SV_SYS/net -exec basename {} \;)
NSIM_CL_NAME=$(find $NSIM_CL_SYS/net -maxdepth 1 -type d ! \
-path $NSIM_CL_SYS/net -exec basename {} \;)
ip link set $NSIM_SV_NAME netns nssv
ip link set $NSIM_CL_NAME netns nscl
ip netns exec nssv ip addr add "${SERVER_IP}/24" dev $NSIM_SV_NAME
ip netns exec nscl ip addr add "${CLIENT_IP}/24" dev $NSIM_CL_NAME
ip netns exec nssv ip link set dev $NSIM_SV_NAME up
ip netns exec nscl ip link set dev $NSIM_CL_NAME up
# Enable passive TFO
ip netns exec nssv sysctl -w net.ipv4.tcp_fastopen=519 > /dev/null
set +e
}
cleanup_ns()
{
ip netns del nscl
ip netns del nssv
}
###
### Code start
###
modprobe netdevsim
# linking
echo $NSIM_SV_ID > $NSIM_DEV_SYS_NEW
echo $NSIM_CL_ID > $NSIM_DEV_SYS_NEW
udevadm settle
setup_ns
NSIM_SV_FD=$((256 + RANDOM % 256))
exec {NSIM_SV_FD}</var/run/netns/nssv
NSIM_SV_IFIDX=$(ip netns exec nssv cat /sys/class/net/$NSIM_SV_NAME/ifindex)
NSIM_CL_FD=$((256 + RANDOM % 256))
exec {NSIM_CL_FD}</var/run/netns/nscl
NSIM_CL_IFIDX=$(ip netns exec nscl cat /sys/class/net/$NSIM_CL_NAME/ifindex)
echo "$NSIM_SV_FD:$NSIM_SV_IFIDX $NSIM_CL_FD:$NSIM_CL_IFIDX" > \
$NSIM_DEV_SYS_LINK
if [ $? -ne 0 ]; then
echo "linking netdevsim1 with netdevsim2 should succeed"
cleanup_ns
exit 1
fi
out_file=$(mktemp)
timeout -k 1s 30s ip netns exec nssv ./tfo \
-s \
-p ${SERVER_PORT} \
-o ${out_file}&
wait_local_port_listen nssv ${SERVER_PORT} tcp
ip netns exec nscl ./tfo -c -h ${SERVER_IP} -p ${SERVER_PORT}
wait
res=$(cat $out_file)
rm $out_file
if [ $res -eq 0 ]; then
echo "got invalid NAPI ID from passive TFO socket"
cleanup_ns
exit 1
fi
echo "$NSIM_SV_FD:$NSIM_SV_IFIDX" > $NSIM_DEV_SYS_UNLINK
echo $NSIM_CL_ID > $NSIM_DEV_SYS_DEL
cleanup_ns
modprobe -r netdevsim
exit 0
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